This invention discloses a portable solar teaching aid, including a portable case of which the case body and cover are flexibly connected; a sunlight analog device, of which the analog light source is fixed in the case body; a solar energy conversion device for converting analog sunlight into electric energy; some teaching appliances, which have electrical connection with the solar energy conversion device. The present invention provides a portable case to install a sunlight analog device, a solar energy conversion device and some teaching appliances in, thereby it is easy to carry and suitable for teaching purpose. The sunlight analog device is powered by electric supply to generate light which is similar to sunlight. The light can be converted into electric energy by solar energy conversion device and then transmitted to teaching appliances. This invention helps the students to get a direct vision of photovoltaic effect and have a hands-on operation of the application of solar energy so as to strengthen their awareness of low carbon and their understanding of the application of new energy.